• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of Scanning Laser Enhanced Electrochemical Microscope for Hydrogen Detection

Research Project

Project/Area Number 11555185
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section展開研究
Research Field Material processing/treatments
Research InstitutionOsaka University

Principal Investigator

SHIBATA Toshio  Grad.School of Eng., Dept.of Mat.Sci.& Processing Osaka University Professor, 大学院・工学研究科, 教授 (90001205)

Co-Investigator(Kenkyū-buntansha) KUSHIDA Takahiro  Sumitomo Metal Ind.Ltd., Co.R&D Lab, Senior Research Engineer, 総合技術研究所, 主任研究員
FUJIMOTO Shinji  Grad.School of Eng., Dept.of Mat.Sci.& Processing Osaka University Assistant Professor, 大学院・工学研究科, 講師 (70199371)
HARUNA Takumi  Grad.School of Eng., Dept.of Mat.Sci.& Processing Osaka University Research Associate, 大学院・工学研究科, 助手 (70243186)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥9,600,000 (Direct Cost: ¥9,600,000)
Fiscal Year 2000: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1999: ¥6,600,000 (Direct Cost: ¥6,600,000)
Keywordshydrogen enbrittlement / visualization of hydrogen distribution / scanning laser enhanced electrochemical microscope / steel / electrochemistry
Research Abstract

The research of hydrogen enbrittlement has needed a new system to detect the positional distribution of hydrogen concentration in/on high strength steels and the other metals. For the purpose, we have developed the Scanning Laser Enhanced Electrochemical Microscope for Hydrogen Detection (H-SLEEM). The principle of this system is described in the following : Ar laser is introduced to an optical microscope through glass fiber. The laser is converged by an object lens, and is irradiated to the metal through the layer of aqueous solution. Two electrochemical cells are attached to the metal. Acid or neutral solution is in the one cell to introduce hydrogen. The introduction of hydrogen can be promoted by electrochemical method. In the other cell, the metal is anodically polarized in alkali solution. Permeation rate of the hydrogen diffused from the hydrogen introduction side of the metal can be obtained by monitor the anodic current. In the case that the converged laser is irradiated to the anodically polarized metal surface of hydrogen detection side, the anodic current may increase due to thermal acceleration of hydrogen oxidation process at very small irradiation site. The current increment by laser irradiation may depend on hydrogen content on the hydrogen detection surface. Therefore, it is expected to obtain two-dimensional hydrogen distribution on the hydrogen detection surface in the solution in-situ by scanning the converged laser. The following was made clear in this study : The system was established in this term. The current increment by unconverged laser irradiation is almost linearly dependent on the hydrogen detection current. The converged laser also induced current increment of hydrogen detection. Scanning the converged laser from hydrogen detection area to the area covered by an insulator provided the mono-directional distribution in current increment relating to the hydrogen detection current at the small irradiation site.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (5 results)

All Other

All Publications (5 results)

  • [Publications] 大塚真司 ら: "局部水素検出用走査型レーザー電解顕微鏡の開発-1"第127回日本金属学会秋季講演大会概要集. 445-445 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 春名匠 ら: "局部水素検出用走査型レーザー電解顕微鏡の開発"「構造材料の環境脆化における水素の機能に関する研究-3」シンポジウム資料. 17-24 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shinji Otsuka, Takumi Haruna, and Toshio Shibata: "Development of Scanning Laser Enhanced Electrochemical Microscope for Hydrogen Detection-1"Abs.of 127th Conference of Japan Institute of Metals. 445 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Takumi Haruna, Toshio Shibata, and Shinji Otsuka: "Development of Scanning Laser Enhanced Electrochemical Microscope for Hydrogen Detection"Proc.of Sympo. on Function of Hydrogen Relating to Environment-Assisted Cracking of Structural Materials-3, Iron and Steel Institute of Japan. 17 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 大塚真司,春名匠,柴田俊夫: "局部水素検出用走査型レーザー電解顕微鏡の開発-1"第127回日本金属学会秋季講演大会概要集. 445-445 (2000)

    • Related Report
      2000 Annual Research Report

URL: 

Published: 1999-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi